(2014 03 08) 1.3 development update - Thanks to waterwingz and a huge number of community testers, a major effort to address longstanding issues with focus override has been started in the unstable branch. Users are encouraged to test and report issues in the forum thread

Camera Features Chart - Cross-reference chart of the new camera capabilities with CHDK by camera model. (User input still needed to fill in the blanks.)

Scripts - Unleash the FULL power of your camera. Don't miss the user-written scripts and scripting tutorial section! Some features of CHDK, like USB-Remote and Motion-Detection are impossible to use without them. CHDK is a system of programming and scripts that run within it. You need both, CHDK and scripts!

Forums

Got a problem or a question? Please check the FAQ first. If you're still stumped, try one of these online forums.

CHDK Forum is the most active of the English forums and the very best place to ask questions and get an answer. It is monitored by most of the current CHDK developers. Postings translated to English via web sites like Google translate happen all the time and postings when English is not your native tongue are normal. So please go there first if you have a question.

CHDK-DE Forum is the forum for the German version of CHDK. CHDK-DE contains a few different functions from CHDK but the devs on both forums are working towards building both versions from a common base. The CHDK-DE forum is quite active and open to English submissions. Generally, only the German speaking CHDK developers tend to monitor the activity there but they know their stuff.

Dpreview forum used to be used most in the past (prior to 2008). There you can find the (English) history of CHDK's development.

Firmware versions in green are available in stable and/or dev for download
Firmware versions in gray do not have official CHDK releases. Check porting status here
For the development status of not-yet-supported cameras, see For Developers.

Under Development

Check out the "For Developers" page to see what progress is being made to port CHDK to additional cameras and firmware versions. You'll also find articles describing the porting process there. (Maybe you'd like to help?)